﻿<!DOCTYPE html> 
<html>
<head>
    <meta charset="utf-8" />
    <title></title>
    <style type="text/css">
        div
        {
            width:100px;
            height:30px;
            line-height:30px;
            text-align:center;
            color:white;
            background-color: lightskyblue;
        }
        div:hover
        {
            background-color: hotpink;
        }
    </style>
</head>
<body>
    <div>绿叶学习网</div>
</body>
</html>
